Warp stop-motion for looms.



J. NORTHROP. WARP STOP MOTION FOR LOOMS.

APPLICATION FILED AUG.12, 1910.

Patented Nov. 26, 1912.

3 SHEETS-SHEET I,

.fm/612 o/ @7072625 Nori/Uff).

J. NORTHROP.

WARP STOP MOTION POR LOOMS.

APPLmATIoN rILBD AUG.12, 1910.

' Patented Nov. 26, 1912.

3 SHEETS-SHEET 2.

J. NRTHILOP.

WAH? STOP MOTION FR APPMUALLUN Tum muy 1:;

LOOMS.

Patented Nov. 26, 1912.

3 SHBETMSHEET s.

Jia@

JONAS NRTHRP. OF HOPE'ALH MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TC DHJPER ijlllflAa'Y. A CORPORATION OF MAINE.

'ARP StCtKMDmlON FOR LOOMS.

i ,o 4.5. 1 oa.

Non'i'inzor, a 'lling at linptdalc, in the count;Y et ter and Stale ot ,lslassaclinf-ett. baie ii an linprmeinent nl llarp Siopdoilons for Looms, of which the following description, in wlaneclion with thc ac'.cnipanyin i ings, i a speciication, line, lette... dran ings r \pr.-i-:ening like, paris.

The invention to be ii-^ l',inal'tei dcwriiwd relates io warp stop motions for loom which act, upon the occurrence ot' a warp inuit, to bring the loom. to rest.

As well understood by those skilled in the art, the suspension of metallic pieces. called drop wires, upon the warp threads as a means ot indicating the breakage of any thread and stepping the iooin it' sach breakageoccurs, unfortunately causes a marked nierease in the number of warp breaks.

.in the Moreover, the weight ot the drop wires will often cause slackness in thi'l threads. sutilrifnt in some eases to canse man stoppage, the same as it a warp thread were broken. Obviously it is desirable to mini '7.1' the number of warp breaho, 1r slack i'lncads. or both, with the result of increased quantity and quality of cloth woven. lt is likewise desirable that the Shuttle shall alwaysbe in the saine box at one side of the loom when ever the loom steps due to a Warp fault, and that the paris constituting the device shall be simple and readily acce sible,

With the above general features 'in View, the aims and purposes of the present inven tion will be best understood troni the toln lowing; description and aoco!npanying drawings of one form of means 'for Carrying the invention into nactical effect, it being understood that: t e. invention is not circumsvribcd and restricted to the. details illus'4 irated but is set forth in its truc scope by the claims.

ln the drawingsz-Figure l is a central tvertical section from front to rear of a loom prgwided with one form of the present invontion looking in the direction of the row; Fig. only so nnrh of the loom strnctnrc being illustrated nl asv t n the relation ot the a .iii'i; 'tinged top or plan if' of rf* loom, showing more particule. :stop motion;l Fig. B is an e Specification of Letters atent.

l l i i l l g i i i i l i l Patented Nov. 26, 1912.

191e. serial No. 576,796.

view in ,side elevation of the warp stop motion, showing the parts in position for stopping the loom; Fig. 4 a section on the line awt, Fig: Q', and Fig. 5 is an enlarged View in side elevation similar to that of Fig. 3 with the parts in position to permit the loom to run.

The loom frame 1, the lav 2, the crank hatt 8. thc connection 4 between the crank shaft and lay. the bottom'or cam shaft 5, the ln-east beam and the bracket 7 having the slot t" and holding notch 9 for a shipper handle 1t), may all be of any usual or dersh-cd forni and construction suitable to the purposes intended.

lpivotally connected to the bracket 7 at 11 is a knock-ott lever 12 having a part 13 to bear against the side of the shipper, the con- `struction being such that movement of the knock-oiln lever clockwise, Fig. Q, will effect discnggagment. of the shipper from its holdinrar notch and consequent stopping of the lconi. as will be well understood by those skilled in the art.

Disposed adjacent the knock-oil lever 12 a lanocicoti' actuator lll which may be of any desired character to effect movement of theI knock-oil lever under conditions that will presently appear. ln the present form of the invention the actuator 14 is conveniently made as an arm mounted on a support lh to swing from said support as a center, said actuator 14 being connected to the knoclcoti' lever by anyv suitable device, as 'for instance a notch in the end of the rftuator and a lug 16 extending from the knol-looft lever 12.

From the varp beam 17 the Warp threads 1S pass over suitable guides or other desired devices, through a series of drop wires, and means are herein provided so that should a warp thread break or become objectionably slack. the knock-ott actuator will be moved to disengage the shipper from its holding notch and cause loom stoppage.

Secured Within the loom sides by Suitable means, as for instance. the bolts 19, are the brackets Q0, which afford a convenient device for sustaining the side bars 21 between which are disposed the drop Wires 2Q. Below the drop Wires QQ is the bottom bar 23 sustained by suitable ledges 24, 24, formed on the brackets 20, Fig'. 4. Any suitable device may be employed within the true 2 F1 Whlch is La) U r end of l pro- 'kw wf HS axis, 85

gf pm'- Yrm" ramble not a im? moving' n that', the one of Such waking 11M-mwir@ wifi y 3o wit 85 longer ng me ing nrw vnf.

ordi n :1. xiv

threads the de 50 Wires,

raised thr A s one funn bar. a adde fw ing fing-yrs Straddles the be vih the :md upwn 48, mi? of wm ad;

w iI

and each screw 34 bar 31', w 60 undersimn lse king mam- Spxfmg the baz' mm from the of the 5nd the side In 4 .Logies As Well understoofi by 'Simyo fsi:

art of weaving, when :i WML i* broken nml is desired lo through the. 'liziimn or he@ shedding moclmnifim in pio weaver turns: the loma: @mulo i the my, 'Lo about The lim'iom 00m in order io bring; tlm lmiifil oven up the .viug', ii la); it ing about half wily buck, :i 5w

facilitates drawiu in. lrtrisml if; im;

Construction limonimfom lo Lz fml Uw i feeler bar does not oiemn :amil ila# @muli removed foni bolow; il; thereof, mi'lii'nmi ivy l, whervopon liso .Mofo my: i desired. y It will be oooii 'limi 1f-wh f 5) actuales. he foci-loi' Uur i position towacil (uw or im side bars 2l is iidimtml lzom e. that af'tuatos tina: weft l fiamma.; the filling ma i cam Soow'ed o ho mm aim'fi the lmoclooil"v action of lio loo on the backward movfiwi V1 lowing a forwzui or il tho weft liaoomoiil i f should a wmp tlm time, the loom will shuttle always ou i, loom.v und, if n, fil! bo. supplied with Siu-li i the ofi lizmumi luf impor 'will ELU il replonishng sido. ami@ loom will omini iii iiinoix-regalenislrizig ,sie

It will npgiwu ,iw-sv scribed flint motion iro mido posoil iii u pwiim at. ihn' uw While lie al in o loof/mb- Stitui'o :i wigveiiivro sind s ment of the inwinioo. mm,- tliereof muy o mad@ within f, of the present inver im.

It is of importan o io non, tha' ilus wiwi 1 of drop Wiies, oi" Warp dotuctoi'xy uw Sim upon the feudal' bar on wli tmlly rest when the feeloi 'miv i position, and that in suf-li wm" -io threads do not have io support izlio full weigh! of the drop Wire@ or do'eotoi's loiii am?" gom i Hw www (limon o? with vom tiliing movement thereof about the 'fweli" lfm, ,Tillich twain and disturbing 11b 'thus removed from the warp wi'h die regoli mt breakage o1' of threads is reduced to a 'iiipiioigy of mi hanism also lw llii motion cam2 operating afm, for' f is'molmr of 'che .stop mid by ognr'eitmg ih@ paris in ibo' "oirlly `s: lesfi'riood, the sont lamme as @lowing lli-1 www. my;

wwking monili@ to ooim ffm' wmlliiizilim of u 49 los ivwtoi' for downing foe brooknl ai'oudifion of' vnrp threads l with a Slm, :i -'Qelfr im? movn l sluis. imam 'for movimv ih@ mo w in im i' f wieg noting: im# go oi' 'lii'sua, oooh mi worp Vw* mois fi eoler oA-ofi ffiiiiniiy oi" Suid {leli they may i'es Whoo iii :nouns mm'ing tho will @filial position toward of ibo (lotofto's, and means for soppiz T ila@ loom willi ille slmlle, al says y' :if orio :flmfinml conigli, of Warp tl'iroads, zilfilL 1 ,Mates s ialiy disposed centrally of the iid on Whirl; they may rest, side on wirxii the detectors are dis; ber. yielding means for u bei' toward either side 7'0 end-1 of the detectors are suswarp threads, and means for 'oom when the feeler bar rueied. s top motion `for looms, a 75 arri detevtors for detecting breakwml eondition of Warp threads, i warp thread engaging eye at Livr bar, each detector having Turni hingitudinally thereof by 80 A '-1, e i c re rimimted on the feeler bar,

; if; n' i the teeler bar in said slots,

" `vping the loom when er bar is obstructed. "g: sii n motion for' looms, a g5 'ai .fonditon of warp threads,

n rg thread engaging eye bnr, each detector havu mg: ongitudinally thereof are mounted on the feeler 90 imposed above thedetectors 0o ne rising movement, means to eier bar in said slots, and means he loom when movement f if: obstrtwted. 95` virili stop motion for looms, the a wiper. :i flexibly mounted osea ating said wiper, a feeler :reen the wiper and feeler :he latter, and a series of 100 operatively disposed with :olor bei,

op motion for looms, the i, ir-er, s wiper actuator, a Ans iziiiinling the wiper for 105 ing motion Cain, a t'ttrally of the Warp if-twber for moving an? i', rection from sani @can tuator and connectie@` and the filling;f motiwi movement of the freier i .I SJOP the 100m when ifttiii ,femmina-iii f #si n 'structed 6. In a loom, the e 15: Wires adapted to 'ne threads, a feeler bar, nw eeler bar, said mutans member, a exible it i am 5 member, and the lili' erating the iiexilile 7. In a loom7 Wires adapted to in threads, a fee-ler im, the feeler bar ineimiis weft hammer, itso; 3 means actuated t and rocking; the rw 8. In u Warp .st/(5 combination of a ik i ing a rocking aetiiaitor same, and a series otb warg upon and normallyre f 9. In a Warp sto; combination of :i

to detect the break. tion of warp thread y; said detecting deviets o for moving the eeiiyi Sto ping the loom when itnwi, i,

feelbr bar is obstmem!W 10. In a warp stow combination of a s; tect breakage or :f

ari

Warp threads. a tft-eli .ne

tectors normalll,r rest, ,Y the ler bar, a series of Warp mii me f actuated from the fillt, each of said denim with engaging pom: separately engage uw: means to stop the los drops at either emi fino @d rift-i of the feeler bar.

11. In a warp stop timos, to l Combination of a 5i-,ries f 50 tecting the brealmglje of Warp threads, each oi ing a Warp eiigagini4 per? feeler bar initially d' detectors and on wir side bars betwwn im?. disposed, means .for toward either side the deteetmfs are threads, and meat-e1 S0 when the feeler wir ri 12. In a Warp simi Acombination of i teoting the hrm,lA of warp threads, eine i ing a Warp engem' s' fi o ram or operating the Wiper warn sion motion for looms, the t f a sexies of warp deteetorgs, L iin-fins inf'lntling a rocking 'ii wiper for avtuating the feeler motion derives. and operating iiwo inw for operating the latter from oi :1 @Wies mi Warp (lteCtOIS,

i', verheug member for operat- 120 a wett hammer, means it wit hummer, and devices i, per ,ivtuatwl from said means t xg the i'eeler bar. o muy wir motion for looms, the 125 .mies of warp detectors @were thread engaging por- 2, a freier bar, filling motion or ii eating the feeler bar tien devices, a stop rod, 130" op stopgmotion for looms, the

vos the tilting motion devices the lay having a bunter, and means for positioning the stop rod for operation by the bunter on the backward movement of the lay when movement of the feeler bar is obstructed.

20. In a Warp stop motion for looms, a warp detector having a Warp thread engaging eye at each end and a slot extending longitudinally of the detector at one side of both of said eyes.

2l. In a loom, the combination of a series of Warp detectors, a feeler bar, means including a rocking member and a wiping device for operating the feeler bar, and a flexibly mounted actuator for operating the wiping device.

22. In a loom, the combination of a series of Warp detectors, a feelcr bar, means including a rocking member and a Wiper for actuating the feeler bar, a Wiper actuator, means for operating the Wiper actuator, and connections between said means and the wiper actuator permitting flexibility of the latter.

23. In a Warp stop motion for looms, the combination of a series of Warp detectors, a feeler bar, a Wiper, means between the wiper and feeler bar for actuating the latter from the former, a Wiper actuator, an arm to Which the wiper actuator is flexibly connected, and means for operating the bar to cause the Wiper actuator to engage the wiper successively at different points.

24. In a warp stop motion for looms, the combination of a series of Warp detectors, a feeler bai', a rocking member for operating said feeler bar, a slidable and rocking member coacting with said first named meinber, a Wiper for operating the slidable and rocking member, and a wiper actuator for operating the Wiper.

25. In a loom, the combination of a series of Warp detectors, a feeler, means Jfor moving the feeler, and an actuator for said means, disconnected and. adapted to be engaged and disengaged during the operation of the loom, and said actuator and means being movable relatively into inoperative relation that the loom may be. run without causing 'oom stoppage when a detector indicates an abnormal condition of a warp thread.

2o. ln a loom, the (.:ombnatioii or a series of warp detectors, a ieeler, means tor moving the feeler to cause it to feel Vtor and be stopped by a Warp detector when in abnormal position, and an actuator for said n'ieans, said means and actuator being disconnected and adapted for relative movement. into in-l operative relation, and means for maintaining them in such inoperative relation that the loom may be run at times withmlt causing stoppage even though a detector may assume an abnormal position.

27. In a loom, the combination of a series of Warp detectors, a feeler, means for moving the feeler positively in bot-h directions of its movement to cause it to feel for and be stopped by a Warp detector in abnormal position, an actuator for said means, and devices permitting the actuator to be moved to and from operative relation With said means, that the loom may at times be run Without causing stoppage when a detector indicates an abnormal condition of a Warp thread.

:28. In a loom, the combination of a. series of warp detectors, a feeler, means connected to the feeler lo cause it to feel for and be stopped by a Warp detector in abnormal position, and an actuator for said means, said actuator and means being normally disconnected for relative mdepeiident movement that the ieeler or actuator may be moved by hand, and the fecler may be caused to clamp and hold a drop detector and when the loom is at rest to enable the operative to readily pick out the abnormal Warp thread 29. In a loom, the combination of drop devices or detectors adapted to be supported by the Warp threads, a fecler, mechanism including an actuator for positively moving the feeler in two directions, said actuator being normally disconnected from the train of mechanism between it and the feeler, and

adapted to be moved into an inoperative position with respect to said mechanism.

30. In a loom, the combination of drop devices or detectors adapted to be sustained by warp threads, a feeler, weft stop motion devices, a rocking member for operating the freier, an actuator for said rocking member, said actuator being disconnected from the rocking member and flexibly connected to the weft stop motion devices, and means actuated by backward movement of the lay upon arrest of the feeler by a drop device or detector to stop the loom With the shuttle always in, the same box.

31. In a loom, the combination off drop devices or detectors adapted to be supported by warp threads, a feeler, means including a rocking member for actuating the feeler, an actuator for said rocking member nor` mally disconnected therefrom, and lmeans to move the actuator.

In a loom, the combination of drop devices or detectors adapted to be supported by Warp threads, a feeler, means including a rocking member for actuating the feeler, an actuator, operating means therefor, and means for causing said actuator to engage the rocking member alternately on opposite sides of its rocking inlcrum.

33. In a moin, the combination of drop devices or detectors adapted to be supported by Warp threads, a feeler, means including a rocking member for actuating the feeler, an actuator for said rocking member norlOO mally disconnected therefrom, means to move the actuator, and means permittu'ig said actuator to be inoperativeiy positioned with respect to the rocking member.

34. In a loom, the combination of drop devices or detectors adapted to be supported by Warp threads, a feeler, means including a rocking member for actuating the feeler, an actuator for said rocking member, means for operating the actuator and causing it to engage and disengage the rocking member, and means permitting the actuator to be moved into inoperative position with respect to the rocking member.

35. In a 100m, the combination of drop devices or detectors adapted to he supported by warp threads, a feeler, means including a. rocking member for operating the feeier',I

said rocking member having actuator engaging portions at each side of its rocking point, and an actuator adapted to engage said p0rtions to rock the rocking member.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JCNAS NORTHROP.

W'itncsses A IVENDELL IViLLIAA-is, Bmi'ruA I. SNARF.. 

